linux-kernel - [PATCH 15/35] perf script: Add machine

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Message-Id: <20220711093218.10967-16-adrian.hunter@intel.com>
Date:   Mon, 11 Jul 2022 12:31:58 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Subject: [PATCH 15/35] perf script: Add machine_pid and vcpu

Add fields machine_pid and vcpu. These are displayed only if machine_pid is
non-zero.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/Documentation/perf-script.txt |  7 ++++++-
 tools/perf/builtin-script.c              | 11 +++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index e250ff5566cf..c09cc44e50ee 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -133,7 +133,8 @@ OPTIONS
         comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff,
         srcline, period, iregs, uregs, brstack, brstacksym, flags, bpf-output,
         brstackinsn, brstackinsnlen, brstackoff, callindent, insn, insnlen, synth,
-        phys_addr, metric, misc, srccode, ipc, data_page_size, code_page_size, ins_lat.
+        phys_addr, metric, misc, srccode, ipc, data_page_size, code_page_size, ins_lat,
+        machine_pid, vcpu.
         Field list can be prepended with the type, trace, sw or hw,
         to indicate to which event type the field list applies.
         e.g., -F sw:comm,tid,time,ip,sym  and -F trace:time,cpu,trace
@@ -226,6 +227,10 @@ OPTIONS
 	The ipc (instructions per cycle) field is synthesized and may have a value when
 	Instruction Trace decoding.
 
+	The machine_pid and vcpu fields are derived from data resulting from using
+	perf insert to insert a perf.data file recorded inside a virtual machine into
+	a perf.data file recorded on the host at the same time.
+
 	Finally, a user may not set fields to none for all event types.
 	i.e., -F "" is not allowed.
 
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 4b00a50faf00..ac19fee62d8e 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -125,6 +125,8 @@ enum perf_output_field {
 	PERF_OUTPUT_CODE_PAGE_SIZE  = 1ULL << 34,
 	PERF_OUTPUT_INS_LAT         = 1ULL << 35,
 	PERF_OUTPUT_BRSTACKINSNLEN  = 1ULL << 36,
+	PERF_OUTPUT_MACHINE_PID     = 1ULL << 37,
+	PERF_OUTPUT_VCPU            = 1ULL << 38,
 };
 
 struct perf_script {
@@ -193,6 +195,8 @@ struct output_option {
 	{.str = "code_page_size", .field = PERF_OUTPUT_CODE_PAGE_SIZE},
 	{.str = "ins_lat", .field = PERF_OUTPUT_INS_LAT},
 	{.str = "brstackinsnlen", .field = PERF_OUTPUT_BRSTACKINSNLEN},
+	{.str = "machine_pid", .field = PERF_OUTPUT_MACHINE_PID},
+	{.str = "vcpu", .field = PERF_OUTPUT_VCPU},
 };
 
 enum {
@@ -746,6 +750,13 @@ static int perf_sample__fprintf_start(struct perf_script *script,
 	int printed = 0;
 	char tstr[128];
 
+	if (PRINT_FIELD(MACHINE_PID) && sample->machine_pid)
+		printed += fprintf(fp, "VM:%5d ", sample->machine_pid);
+
+	/* Print VCPU only for guest events i.e. with machine_pid */
+	if (PRINT_FIELD(VCPU) && sample->machine_pid)
+		printed += fprintf(fp, "VCPU:%03d ", sample->vcpu);
+
 	if (PRINT_FIELD(COMM)) {
 		const char *comm = thread ? thread__comm_str(thread) : ":-1";
 
-- 
2.25.1